Wait, I was just being away for a day, and you guys left me so much homework to answer o.O
Its ok, special treat, I will spend some time from my weekend to share what I know
If someone is interested in my kind of review of the E5000, please have look here:
https://www.head-fi.org/showcase/final-e5000.23161/reviews
@F700 5/5, what an incredible compliment you have given to the E5000. THANK YOU! We are really happy that our E5000 is approved by alien come from an unknown planet called "between drivers". I think it is a very good place for audiophiles!
Hearing that Final Audio is working on a successor to the E5000 is music to my ears.
Heheh, it will happen, but unfortunately, we could not give any promise yet. It is quite unlikely in 2020. For the next 2 years, you can expect us more focusing on A-series and D-series and .... TWS? Shhhh!
An A5000 single DD with a warmish tuning would do. I even would blind purchase it as long as it remains correctly priced, around, let's say, USD 600/700.-?
A-series started with A8000. There are a lot of room for us to play around! We can have A7000, A3000, A1000, or maybe even A569 if we do not have the 000 room anymore. Right?
But sorry that I have no intention to disappoint you, but I also do not want to let you guys expecting too much. The concept of A-series has been fixed to "Transparency". The sound signature of E5000 is quite compromising the series concept. Therefore, yes you can expect a warmer version of A8000, but might not be as warm as the E5000.
Let me explain this. Transparency = clarity + separation + 3D depth perception. The human hearing system has a masking effect which means that, when our ear is exposing to low frequencies, due to the internal structure of our cochlea (please Google around), the mid and high will become less audible. Therefore when the low frequencies are too strong, it is common that clarity starts to be compromised because clarity is strongly affected by highs.
Therefore, to go with the same direction of E5000, there is a possibility to continue with the E series or, even a new series. You know what, Final still has many letters to use. Haha! We love letters. And yes, sorry, we rather spend our time on making good sound than spending time thinking of cool name because the sound is what matters the most to us, and hopefully to you too.
I thank
@Final Audio. Their perfectionism made these reviews at 9.5/10 scores.
https://kulakligim.net/tag/final-audio/
Personally I was sick of ChiFi. Now behold JapFi ❤
@Tamirci Is this Mahir? Oh you are here too! Thank you for sharing your reviews with us! Guys, Tamirci here is working on his own reviewing website and he is generously reviewing our products now. Please share some love and have a visit to his awesome website.
It is written in Turkish, but we have Google Translate now right? There is no language border now with a good tool, just like if there is good sounds and good music, there is no culture border between us.
It is nice to see people from different part of the world gathering here sharing same interest.
/raise my hand. I am from Japan! To prove this, my IP address is xxx.xxx.xxx.xxx. Haha. I can't wait for the sakura to blossom.
Since
@Final Audio is finally (!) active on head-fi, I'd like to ask a question I've been wondering for quite a while: are the micro-dynamic drivers in the E-series IEMs the "same" one across the range? E.g. do E1000/E2000 etc. and E4000/E5000 share the same magnet assembly and diaphragm design?
I do know that the E4000 and E5000 uses an acoustic chamber (kinda like passive radiators in a sense) to enhance the bass response and smoothen the overall FR, but I was wondering if their sonic differences from the other three E series IEM is only due to that chamber design and not any differences in diaphragm material/driver design. I am also really curious to know what the diaphragm material might be since they don't sound like Titanium drivers, rather they have a PET/Biocellulose kind of signature. I do realize how you might not want to disclose some of the information due to R&D secrecy and such so it's understandable if you don't want to share every details.
@kmmbd Wow! Good question, and a tough one huh! Like mentioned before, we design a product based on the series concept. A-series because we need to achieve extreme transparency, we have decided to go with Beryllium because it is light and hard. We are not using Beryllium because it sounds cool, or eye-catching to make easy money. Simple idea, because you want to fix something by applying nails, therefore you need a hammer instead of because you have a cool hammer, and therefore you are adding thousands of nails around your home. (Maybe some people do that?)
So for E-series, Quiz! What is the concept of E-series? Anyone?
So E-series has its own concept. We want to make it cheap, we want to make it sounds good, we want to make it a companion that you can use it for all music genres without fatigue. That is why you find the E-series balanced, neutral and smooth and relaxing. To achieve this, we do not need like super rare material. Rare material is cool for marketing, but when rare material is involved, it means that the cost will go up which in the end, will only limit the number of people who can enjoy the sound.
Yes, we are sorry that A8000 is using rare materal which has caused the high price. But our engineering team is working real hard to work with other material or design, to achieve the same concept but with a lower price. Hopefully, one day we will have some products in the A-series that is affordable by most of the music lover.
Sorry, I am going too far. Ok answering your question. The journey of the E-series started with E3000. So we design a driver with the material and structure on par with the series concept and target cost. So this driver is already perfect for E-series, at least in our point of view. So, the materials for the 6.4mm driver of all the E-series are indeed identical, structural design is also very same but with changes onto dimension.
So to conclude this, could we say all the drivers are the same? Nope. They are more like siblings. If you change the driver of E4000 with E2000, it won't sound the same. Of course, we do not encourage you to do that, because first, it will void the warranty, second, it is quite difficult to achieve the complete internal sealings once opened.
I bought the Sony N3 and Final E5000 blind, without knowing anything about their sound signature. They still are there, at the top of my collection. I got some Chi-Fi stuff based on reviews, recommendations, etc... they are all gone, excepting the Blon BL-03, which still is very enjoyable in 2020 (deserved hype for the price). 
